When subtracting 3x2+4x+9 from 15x2+6x-12 which two choices are correct

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41